EP1066478A1 - Disc brake actuator - Google Patents

Disc brake actuator

Info

Publication number
EP1066478A1
EP1066478A1 EP99913440A EP99913440A EP1066478A1 EP 1066478 A1 EP1066478 A1 EP 1066478A1 EP 99913440 A EP99913440 A EP 99913440A EP 99913440 A EP99913440 A EP 99913440A EP 1066478 A1 EP1066478 A1 EP 1066478A1
Authority
EP
European Patent Office
Prior art keywords
actuator
thrust member
brake
force transmission
transmission device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99913440A
Other languages
German (de)
French (fr)
Other versions
EP1066478B9 (en
EP1066478B1 (en
Inventor
Paul Thomas
Ralph Pratt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meritor Heavy Vehicle Braking Systems UK Ltd
Original Assignee
Meritor Heavy Vehicle Braking Systems UK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meritor Heavy Vehicle Braking Systems UK Ltd filed Critical Meritor Heavy Vehicle Braking Systems UK Ltd
Publication of EP1066478A1 publication Critical patent/EP1066478A1/en
Application granted granted Critical
Publication of EP1066478B1 publication Critical patent/EP1066478B1/en
Publication of EP1066478B9 publication Critical patent/EP1066478B9/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F16D65/183—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes with force-transmitting members arranged side by side acting on a spot type force-applying member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F16D65/56—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut
    • F16D65/567—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting on a disc brake
    • F16D65/568—Slack adjusters mechanical self-acting in one direction for adjusting excessive play with screw-thread and nut for mounting on a disc brake for synchronous adjustment of actuators arranged in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/14—Mechanical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/22—Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
    • F16D2125/28—Cams; Levers with cams
    • F16D2125/32—Cams; Levers with cams acting on one cam follower

Definitions

  • This invention relates to an actuator device for a disc brake, primarily for a motor vehicle, the device including a rotary actuator operable, via a force transmission device, to move a friction element of the brake, in use, into engagement with a rotary brake disc.
  • the invention also embraces a disc brake incorporating such an actuator device.
  • an actuator device for a disc brake comprises a rotary actuator operable, via a force transmission device, to move a friction element of the brake, in use, into engagement with a rotary brake disc, and a thrust member arranged to transmit force from the actuator to the force transmission device, the actuator being arranged to engage the thrust member in a manner such as to prevent rotation of the latter.
  • the thrust member is received within a recess of the actuator and a defining wall of the recess engages the thrust member to prevent rotation thereof.
  • the force transmission device includes a pair of threadedly interengaged elements forming part of an extensible adjuster strut, one of the elements being held against rotation by a non-circular formation carried by the thrust member, conveniently in the form of an elongate stem extending into a complementary bore of the element.
  • Figure 1 is an end view of one form of the disc brake of the present invention
  • Figure 2 is a view from above, partly in cross-section, of the brake of Figure 1;
  • Figure 3 is a side view, partly in cross-section, of the brake shown in Figures 1 and 2, and
  • FIG 4 is an enlarged view of a component of the brake of Figures 1 to 3.
  • the disc brake illustrated in the drawings has a fixed carrier 1 which carries a pair of friction elements, shown as pads 2, 3, disposed respectively at either side of a brake disc 4, the carrier serving to mount the brake on a vehicle and to absorb torque sustained by the pads during a braking operation.
  • a clamp member or calliper 5 straddles the brake disc and is mounted on the carrier so as to be slidable axial ly of the brake disc relative to the carrier, by way of pins 6, in conventional manner.
  • the calliper carries an integral housing 7 which is adapted to mount a conventional air or other power actuator (not shown) on an external face 8 thereof.
  • the housing 7 defines a chamber 9 within which a pivotal brake actuating lever 10 may perform an angular reciprocal swinging movement, as indicated by the arrows, under the action of a thrust member of the power actuator which, with the latter mounted on the face 8, extends through an opening 1 1 of the housing into engagement with a recess 12 of the lever 10.
  • the lever is integral with or attached to a rotary actuating member 13 which is rotatably supported within the calliper by way of a pair of needle bearing assemblies 14.
  • the member 13 is recessed to house respective cylindrical rollers 15, 16, the axes of which are offset from the rotary axis of the actuating member 13 and form an eccentric actuating arrangement with the rollers 15 and 16 bearing against respective thrust members 17A, 18A of adjacent thrust assemblies shown as adjustable tappet assemblies indicated generally at 17 and 18.
  • Rotation of the lever 10 and its connected member 13 causes actuating thrust to be applied via the tappet assemblies to the directly actuated friction element 2 and, by reaction via the calliper 5, to the indirectly actuated friction element 3.
  • An adjuster assembly is indicated generally at 19 and may be of any appropriate conventional type needing no detailed description for the purpose of this invention.
  • the adjuster responds to excessive movement of the friction elements 2, 3 and produces resultant rotation of an adjuster shaft 20 which, via an output gear 21 rotates a pair of input gears 22, 23 associated respectively with the adjustable tappet assemblies 17, 18.
  • the tappet assemblies are of identical construction and operation and only the assembly 17 will be described in sufficient detail for a full understanding of the invention.
  • This assembly has an outer sleeve 24 which is internally threaded at 24A and receives a hollow internal shaft 25 having an externally threaded portion 25A extending over a part of its length for cooperation with the internal thread of the sleeve 24.
  • the shaft and sleeve form between them an adjuster strut of variable length.
  • the shaft 25 is provided, at its outer end, with a tappet head 26 which is releasably coupled to the shaft so as, conveniently, to be freely rotatable relative to the latter.
  • Operation of the adjuster 19 causes rotation of the outer sleeve 24 by way of the gear 21 and, in order to cause the inner shaft 25 to move axial ly so as to extend the adjuster strut to compensate for wear of the friction elements, it is necessary to lock this shaft against rotary movement.
  • This is achieved, in the present embodiment, by providing the thrust member 1 7A, which is engaged over the adjacent end of the sleeve 24, with an elongate stem 27 of non-circular cross-section which extends within the hollow shaft 25, the internal surface of which forms a complementary bore.
  • the stem 27 is provided with opposed flat surfaces 27A for engagement with corresponding surfaces within the shaft 25. 5 -
  • the thrust member 17A is of generally rectangular form with four flat edge surfaces 17B.
  • the thrust member is housed within a recess in the actuating member 13, which provides at least one planar surface 13A which engages the adjacent planar surface 17B of the thrust member so as to hold the thrust member against rotation.
  • a shaded area A representing surface 13A of the actuating member, overlaps the surface 1 7B of the thrust member 17A to prevent rotation of the latter.
  • this arrangement for preventing rotation of the inner shaft 25 is accommodated within the normal dimensions of the actuating member 13 and is therefore compact and particularly suitable for use in a brake of relatively small dimensions.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

An actuator (13) device for a disc brake (4) is provided comprising a rotary actuator (13) operable, via a force transmission device (17, 18), to move a friction element (2) of the brake, in use, into engagement with a rotary brake disc (4), and a thrust member (17A, 18A) arranged to transmit force from the actuator (13) to the force transmission device (17, 18), the actuator (13) being arranged to engage the thrust member (17A, 18A) in a manner such as to prevent rotation of the latter.

Description

DISC BRAKE ACTUATOR
This invention relates to an actuator device for a disc brake, primarily for a motor vehicle, the device including a rotary actuator operable, via a force transmission device, to move a friction element of the brake, in use, into engagement with a rotary brake disc. The invention also embraces a disc brake incorporating such an actuator device.
Our earlier specification W097/01045 discloses an arrangement in which a thrust member, through which force is transmitted from the actuator to the force transmission device, is held against rotation by engagement with a plate extending between the thrust member and a further such member carried by an adjacent force transmission device associated with the actuator. This arrangement is satisfactory in very large brakes, but cannot easily be accommodated in smaller brakes in which there may be insufficient space in the region of the force transmission device for the convenient incorporation of the aforementioned anti-rotational arrangement.
According to the present invention, an actuator device for a disc brake comprises a rotary actuator operable, via a force transmission device, to move a friction element of the brake, in use, into engagement with a rotary brake disc, and a thrust member arranged to transmit force from the actuator to the force transmission device, the actuator being arranged to engage the thrust member in a manner such as to prevent rotation of the latter. - 2 -
Conveniently, the thrust member is received within a recess of the actuator and a defining wall of the recess engages the thrust member to prevent rotation thereof.
Typically, the force transmission device includes a pair of threadedly interengaged elements forming part of an extensible adjuster strut, one of the elements being held against rotation by a non-circular formation carried by the thrust member, conveniently in the form of an elongate stem extending into a complementary bore of the element.
From another aspect of the invention, there is provided a disc brake incorporating the aforesaid actuator device.
The invention will now be described, by way of example, with reference to the accompanying drawings in which:-
Figure 1 is an end view of one form of the disc brake of the present invention;
Figure 2 is a view from above, partly in cross-section, of the brake of Figure 1;
Figure 3 is a side view, partly in cross-section, of the brake shown in Figures 1 and 2, and
Figure 4 is an enlarged view of a component of the brake of Figures 1 to 3. The disc brake illustrated in the drawings has a fixed carrier 1 which carries a pair of friction elements, shown as pads 2, 3, disposed respectively at either side of a brake disc 4, the carrier serving to mount the brake on a vehicle and to absorb torque sustained by the pads during a braking operation. A clamp member or calliper 5 straddles the brake disc and is mounted on the carrier so as to be slidable axial ly of the brake disc relative to the carrier, by way of pins 6, in conventional manner. The calliper carries an integral housing 7 which is adapted to mount a conventional air or other power actuator (not shown) on an external face 8 thereof. The housing 7 defines a chamber 9 within which a pivotal brake actuating lever 10 may perform an angular reciprocal swinging movement, as indicated by the arrows, under the action of a thrust member of the power actuator which, with the latter mounted on the face 8, extends through an opening 1 1 of the housing into engagement with a recess 12 of the lever 10. The lever is integral with or attached to a rotary actuating member 13 which is rotatably supported within the calliper by way of a pair of needle bearing assemblies 14. The member 13 is recessed to house respective cylindrical rollers 15, 16, the axes of which are offset from the rotary axis of the actuating member 13 and form an eccentric actuating arrangement with the rollers 15 and 16 bearing against respective thrust members 17A, 18A of adjacent thrust assemblies shown as adjustable tappet assemblies indicated generally at 17 and 18. Rotation of the lever 10 and its connected member 13 causes actuating thrust to be applied via the tappet assemblies to the directly actuated friction element 2 and, by reaction via the calliper 5, to the indirectly actuated friction element 3. - 4 -
An adjuster assembly is indicated generally at 19 and may be of any appropriate conventional type needing no detailed description for the purpose of this invention. The adjuster responds to excessive movement of the friction elements 2, 3 and produces resultant rotation of an adjuster shaft 20 which, via an output gear 21 rotates a pair of input gears 22, 23 associated respectively with the adjustable tappet assemblies 17, 18.
The tappet assemblies are of identical construction and operation and only the assembly 17 will be described in sufficient detail for a full understanding of the invention. This assembly has an outer sleeve 24 which is internally threaded at 24A and receives a hollow internal shaft 25 having an externally threaded portion 25A extending over a part of its length for cooperation with the internal thread of the sleeve 24. The shaft and sleeve form between them an adjuster strut of variable length. The shaft 25 is provided, at its outer end, with a tappet head 26 which is releasably coupled to the shaft so as, conveniently, to be freely rotatable relative to the latter. Operation of the adjuster 19 causes rotation of the outer sleeve 24 by way of the gear 21 and, in order to cause the inner shaft 25 to move axial ly so as to extend the adjuster strut to compensate for wear of the friction elements, it is necessary to lock this shaft against rotary movement. This is achieved, in the present embodiment, by providing the thrust member 1 7A, which is engaged over the adjacent end of the sleeve 24, with an elongate stem 27 of non-circular cross-section which extends within the hollow shaft 25, the internal surface of which forms a complementary bore. As best seen in Figure 4, the stem 27 is provided with opposed flat surfaces 27A for engagement with corresponding surfaces within the shaft 25. 5 -
As can be seen more clearly from Figure 4, the thrust member 17A is of generally rectangular form with four flat edge surfaces 17B. The thrust member is housed within a recess in the actuating member 13, which provides at least one planar surface 13A which engages the adjacent planar surface 17B of the thrust member so as to hold the thrust member against rotation. This in turn, via the stem 26, prevents rotation of the inner shaft 25, so that when the outer sleeve 24 is rotated by the adjuster 19, the inner shaft performs an axial adjusting movement in a direction such as to extend the strut and thereby compensate for wear of the adjacent friction element. As can be seen from Figure 3, with the lever 10 in its illustrated rest position, a shaded area A, representing surface 13A of the actuating member, overlaps the surface 1 7B of the thrust member 17A to prevent rotation of the latter.
It will be seen that this arrangement for preventing rotation of the inner shaft 25 is accommodated within the normal dimensions of the actuating member 13 and is therefore compact and particularly suitable for use in a brake of relatively small dimensions.

Claims

6 -CLAIMS
1. An actuator device for a disc brake comprising a rotary actuator operable, via a force transmission device, to move a friction element of the brake, in use, into engagement with a rotary brake disc, and a thrust member arranged to transmit force from the actuator to the force transmission device, the actuator being arranged to engage the thrust member in a manner such as to prevent rotation of the latter.
2. A device as claimed in Claim 1 , wherein the thrust member is received within a recess of the actuator and a defining wall of the recess engages the thrust member to prevent rotation thereof.
3. A device as claimed in Claim 1 or 2, wherein the force transmission device includes a pair of threadedly interengaged elements forming part of an extensible adjuster strut, one of the elements being held against rotation by a non-circular formation carried by the thrust member.
4. A device as claimed in Claim 3, wherein the non-circular formation is an elongate stem extending into a complementary bore of said one element.
5. A device as claimed in Claim 4, wherein one end of the thrust member carries a head from which extends the elongate stem, the head providing a surface for engagement by the actuator to prevent rotation of the thrust member. - 7 *
6. A device as claimed in any one of Claims 3 to 5, wherein said one element is a shaft having an external thread and the other element is a sleeve having an internal thread engaged with said external thread.
7. A disc brake including an actuator device as claimed in any one of the preceding claims.
EP99913440A 1998-03-26 1999-03-23 Disc brake actuator Expired - Lifetime EP1066478B9 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9806542.8A GB9806542D0 (en) 1998-03-26 1998-03-26 Disc brake actuator
GB9806542 1998-03-26
PCT/GB1999/000911 WO1999049232A1 (en) 1998-03-26 1999-03-23 Disc brake actuator

Publications (3)

Publication Number Publication Date
EP1066478A1 true EP1066478A1 (en) 2001-01-10
EP1066478B1 EP1066478B1 (en) 2004-05-26
EP1066478B9 EP1066478B9 (en) 2004-12-01

Family

ID=10829345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99913440A Expired - Lifetime EP1066478B9 (en) 1998-03-26 1999-03-23 Disc brake actuator

Country Status (7)

Country Link
US (1) US6435319B1 (en)
EP (1) EP1066478B9 (en)
JP (1) JP2002507706A (en)
BR (1) BR9909079A (en)
DE (1) DE69917617T2 (en)
GB (1) GB9806542D0 (en)
WO (1) WO1999049232A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2505868A2 (en) 2011-03-29 2012-10-03 Meritor Heavy Vehicle Braking Systems (UK) Limited A brake adjuster mechanism

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE523555C2 (en) * 2001-09-07 2004-04-27 Haldex Brake Prod Ab Modular writing brake for a vehicle
GB0301798D0 (en) * 2003-01-25 2003-02-26 Meritor Heavy Vehicle Braking Force transmission device for a disc brake
US6955246B2 (en) 2003-01-31 2005-10-18 Arvinmeritor Technology, Llc Rapid take up and vibration proof adjuster mechanism
DE10307734B3 (en) * 2003-02-24 2004-09-30 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Disc brake for a vehicle, in particular a commercial vehicle
US20050045434A1 (en) * 2003-04-02 2005-03-03 Franz-Helmut Holl Vehicle brake assembly having an assembly opening and method of assembly therefor
US6817452B2 (en) * 2003-04-02 2004-11-16 Arvinmeritor Technology, Llc Lever assembly having a selectable push rod receiving insert for a vehicle brake assembly and method of assembly therefor
US6811004B1 (en) 2003-05-09 2004-11-02 Arvinmeritor Technology, Llc Vehicle brake assembly having a bearing block closure and method of assembly therefor
US20040222051A1 (en) * 2003-05-09 2004-11-11 Mccann Denis John Multi-component lever assembly for a vehicle brake assembly and method of assembly therefor
DE10322834B4 (en) * 2003-05-19 2008-10-02 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Pneumatically or electromotively actuated disc brake
GB0410838D0 (en) 2004-05-14 2004-06-16 Meritor Heavy Vehicle Braking Parking brake assembly
GB0414108D0 (en) 2004-06-24 2004-07-28 Meritor Heavy Vehicle Braking A brake assembly
ATE403814T1 (en) * 2004-10-25 2008-08-15 Meritor Heavy Vehicle Braking BRAKE LEVER ASSEMBLY FOR MOTOR VEHICLE AND METHOD OF ASSEMBLY
GB0516201D0 (en) * 2005-08-06 2005-09-14 Meritor Heavy Vehicle Braking Disc brake caliper
DE102011103823A1 (en) * 2011-06-09 2012-12-13 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Multiple-piston disc brake
EP2639473A1 (en) * 2012-03-16 2013-09-18 Meritor Heavy Vehicle Braking Systems (UK) Limited Disc brake caliper
DE102013015002A1 (en) * 2013-09-10 2015-03-12 Wabco Europe Bvba Disc brake, in particular for commercial vehicles

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3489251A (en) * 1967-01-06 1970-01-13 Kelsey Hayes Co Disk brake with friction pad support means
DE3631036A1 (en) * 1986-09-12 1988-03-24 Teves Gmbh Alfred ACTUATING DEVICE FOR A DISC BRAKE, ESPECIALLY FOR MOTOR VEHICLES
DE4308704A1 (en) * 1993-03-18 1994-09-22 Knorr Bremse Ag Air operated disc brake
US5664646A (en) * 1993-06-02 1997-09-09 Bejot; Philippe Disc brake, especially for vehicles
SE505339C2 (en) * 1994-10-24 1997-08-11 Haldex Ab Disc brake caliper
WO1997001044A1 (en) * 1995-06-20 1997-01-09 Ab Volvo Disc brake device for vehicles
DE69633257T2 (en) * 1995-06-20 2005-09-15 Meritor Heavy Vehicle Braking Systems (Uk) Ltd., Reading Brake and actuator for this purpose

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9949232A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2505868A2 (en) 2011-03-29 2012-10-03 Meritor Heavy Vehicle Braking Systems (UK) Limited A brake adjuster mechanism
US8893862B2 (en) 2011-03-29 2014-11-25 Meritor Heavy Vehicle Braking Systems (Uk) Limited Brake adjuster mechanism

Also Published As

Publication number Publication date
US6435319B1 (en) 2002-08-20
JP2002507706A (en) 2002-03-12
EP1066478B9 (en) 2004-12-01
WO1999049232A1 (en) 1999-09-30
EP1066478B1 (en) 2004-05-26
BR9909079A (en) 2000-12-05
DE69917617T2 (en) 2005-06-09
GB9806542D0 (en) 1998-05-27
DE69917617D1 (en) 2004-07-01

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